Oil-guard for drop-hammers



(No Model.)

C. E. BILLINGS.

OIL GUARD FOR DROP HAMMBRS.

Y 10.566,128. PatentedAugJalaQa ummm (5,.. 2% wma/@ @ha EB g UNITEDSTATES PATENT OEEIcE.

CHARLES E. BILLINGS, OF HARTFORD, CONNECTICUT.

OIL-GUARD FOR DROP-HAMMERS.

SPECIFICATION forming part of Letters Patent No. 566,128, dated August18, 1896.

' Application nea May 28,1896. serial No. 593,408. cto model.)

To all whom it may concern.-

Be it known that I, CHARLES E. BILLINGs, a citizen of the United States,residing in Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inOil-Guards for Drop-Hammers, of which the following is a specification.4

This invention relates to drop-hammers, and more particularly tooil-guards therefor; andthe object of the invention is to provideimproved means whereby oil from the journal-bearings of the drop-hammercan be prevented from flowing on the lifting-board, and which means willbe simple in construction and effective in operation.

In the drawings accompanying and forming part of this specification,Figure l is a front view of the upper portion of a drophammer with theimproved oil-guard in po# sition thereon. Fig. 2 is a crossesectionalview, partly in elevation, taken in line ct ct, Fig. l. Fig. 3 is a Viewof one of the liftingrolls detached and partly in section and showingthe improved oil-guard in position relatively thereto, one of saidguards being shown in section.

Similar characters designate like parts in all the figures of thedrawings.

In drop-hammers as ordinarily constructed it has been found, inpractice, that lubricant from the journal-bearings works its way bymeans of the lifting-roll shafts to the periphery of said rolls, andfrom thence to the board forming the usual means for elevating thehammer, whereby within a comparatively short time such board becomesextremely slippery, so that the rolls permit the same to sliptherethrough and'only bite thereon intermittingly, thereby soonrendering it unfit for use and thus necessitating constant renewalthereof, which is not only expensive in the matter of stock, but also inthe time and labor required to replace the board. In order, therefore,to obviate this serious disadvantage, improved means is provided wherebyoil from the j ournal-bearings is absolutely prevented from reaching thelifting-board.

In the preferred form thereof herein shown and described the improvedoil-guard comprises a suitable disk disposed on the end of the hub ofeach of the respective lifting-rolls 5; and in the present constructionthe disks are centrally bored to lit the said hub and preferably havetwo annular ianges 7 and 8, of differential diameters, and are providedwith sharp-edged peripherieS, and. an annular groove 9 being locatedbetween said iianges. Each disk is provided with a transverse aperturel0 for the reception of a pin 11, which extends into a hole in the hubof the lifting-roll, whereby the disks are held on the hub for rotation.

In assembling the oil-guards the flanges of the disk having thelargestydiameter are disposed nearest the lifting-roll for the purposehereinafter set forth. It will be understood of the rolls they may besecured in position adjacent to the ends of the rolls in any othersuitable manner.

In the use of this improved oil-guard the oil from the journal-bearingsfinds its way by centrifugal force to the edge of the outer flanges 7 ofthe disks 6, where it either remains or is thrown off during therotation of the lifting-rolls. In case, however, the oil should passbeyond such outer flanges it will be stopped by the inner anges, whereit will likewise eitherremain or be thrown off, so that lubricant fromthe journal-bearings is absolutely prevented from reaching theperipheries of the lifting-rolls, and thereby the lifting board orstrap.

It will be understood that instead of forming the oil-guard as a diskhaving a pair of lian ges thereon each disk may have any desired numberof iianges and may be secured in position in any desired way, but thepreferable construction is to provide each disk With twoparallelly-extending ianges, whereby if the lubricant works its way fromthe outer Iiange the inner flange will form an effective means forpreventing the same from reaching the lifting-board.

Having described my invention, I claim- 1. An oil-guard for shaftshaving a pair of parallel annular flanges of diiferential diameters andhaving an annular groove intermediate thereof.

2. In combination with a lifting-roll, of a drop-hammer, an oil-guardcomprising a disk that instead of locating the disks on the hubs IOOdisposed on eaeh end of the hub thereof, and flanges of differentialdiameters having sharp eaoh of said disks having a pair of annularperipheries and having` an annular groove in- 1o flanges of differentialdiameters. termediate thereof. 3. In combination With a lifting-roll, ofa 5 drop-hammer, an oil-guard disposed thereon CHARLES E' BILLINGS' andComprising` a pair of eentrallybored NVitnesses: disks, one Xedlysecured at each end of said F. C. BLAND, lifting-roll, each of saiddisks havinga pair oi' B. B. WELLS.

